Level 20+ Fractal Build

Rapidly approaching level 20 in the Fractals. My guildies have been preaching for weeks that once you reach level 20 the fun and games end and it becomes serious business. Have always played my ranger 30/30/10/0/0 build with full glass cannon gear, LB and SB for weapons. I am looking to respec and need some help. I wish to stay with a longbow-centric (I have Kudzu) build, secondary weapon is negotiable. I have the tokens to buy a full soldiers set of armor and plan to keep my zerkers neck and earring along with the karka shell accessory, 2 fractal rings (zerker stats) and the fractal backpiece (again zerker stats).

Will that be good enough to survive the impending doom?

If it is how should I rune the armor? Was thinking ranger runes but am open to suggestions.